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Difference between static class and singleton pattern? 36 answers
This is mainly due to the limitations of static types versus singletons . Which are:
Static types cannot implement interfaces and derive from base classes. From the above we can see that static types cause high coupling - you cannot use other classes in tests and different environments. Static classes cannot be injected using dependency injection. Singletons are much easier to mock and shim. Singletons can be easily converted to transients. These a few reasons from the top of my head. This is probably not all.
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